JPH0741440B2 - Vacuum press device and control method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vacuum press apparatus configured to hot-press a workpiece such as a printed circuit board in a vacuum state and then cold-pressing the same, and a control method therefor. .

[Prior Art and its Problems] Generally, as a method of press-molding a glass epoxy copper-clad substrate or the like, a method of performing heating and cooling with one press device, and a press for exclusive use of a hot press and a press for cold press respectively. As an apparatus, there is a so-called transfer press (or tandem press) method of forming a material by moving the material between both press apparatuses. The molding temperature is 160 ° C to 200 ° C for the glass epoxy substrate.

In addition, there is a so-called vacuum press device that forms in a vacuum state because it is necessary to remove water contained in the material and degas the gas generated during forming, but in the latter case, only the hot press device is placed in a vacuum state and cold pressure is applied. The pressing device is generally not a vacuum.

By the way, 350 ℃ -400 ℃ like Teflon substrate
In forming at such a high temperature, oxidation of the copper foil due to this high temperature becomes a big problem. That is, when the copper foil is exposed to an atmosphere containing oxygen (in the air) in such a high temperature state, an oxide film is immediately formed on the surface of the copper foil, resulting in a defective product due to defective conduction.

In a transfer press in which only the hot press machine is in a vacuum state, the material is transferred from the hot press machine to the cold press machine at a high temperature, and the copper foil is exposed to the atmosphere during this transfer. Therefore, it cannot be used for molding at such a high temperature. For this reason, a vacuum press machine is used that heats and cools the copper foil in a high temperature state without exposing it to the atmosphere in order to heat and cool it in a vacuum after inserting the material into the press machine. It is manufactured by gradually increasing the temperature of a hot plate from a normal temperature in a pressed state, heating and compressing the hot plate at a predetermined temperature for a predetermined time, and slowly cooling it to room temperature and then taking it out.

However, in forming with a vacuum press machine that performs heating and cooling as described above with a single press machine, the press machine (hot plate) must be heated and cooled each time the material is heated and cooled. There is a problem that the cycle takes time and the cost of heat energy is high.

[Object of the Invention] In view of the above circumstances, the present invention is a vacuum press capable of preventing oxidation of a copper foil, simultaneously advancing each step of its production in parallel, suppressing heat energy loss and improving productivity. An object is to provide an apparatus and a control method.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a hot-pressing mechanism for hot-pressing a workpiece, and a hot-pressed workpiece that is disposed adjacent to the hot-pressing mechanism. A cold-pressing mechanism for cold-pressing an object, and a workpiece storage unit that is arranged adjacent to the hot-pressing mechanism and stores the workpiece, and the press-pressing the workpiece stored in the workpiece storage unit. A supply mechanism that includes a transport unit that supplies the mechanism to the hot-pressing mechanism and transfers the hot-pressed workpiece to the cold-pressing mechanism, and a cold-pressed workpiece that is arranged adjacent to the cold-pressing mechanism. A transfer mechanism for transferring an object from a cold press mechanism to a receiving mechanism is provided, and a hot press mechanism, a cold press mechanism, and a supply mechanism are installed in a vacuum chamber isolated via an opening / closing door, respectively. Beyond the standby position / storage unit where it does not interfere with the workpiece storage unit Moveable along the conveying direction of the work piece so that the tips of the first conveying position reach the hot press mechanism and the second convey position beyond the hot press mechanism to reach the cold press mechanism. The transfer member constitutes a vacuum transfer press device in which the workpieces are sequentially transferred into the next vacuum chamber when the opening / closing door is opened, while the vacuum transfer press device is cold pressed by the cold press mechanism. After the work piece is taken out of the vacuum chamber by the transfer mechanism, the work piece hot pressed by the hot press mechanism is transferred to the cold press mechanism by the supply mechanism transport section, and at the same time the heat is removed from the supply mechanism storage section. Supplying the work piece to the pressure press mechanism, and then controlling the operation so that the work piece is supplied from the outside of the vacuum chamber to the supply mechanism housing with the supply mechanism and the hot press mechanism separated. A.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

The vacuum pressing apparatus shown in FIGS. The workpiece 10 is hot-pressed and then cold-pressed to be molded, and is taken out from the vacuum chamber 3 after completion of the molding, which is a so-called transfer press device.

Here, the vacuum chambers 1 to 3 are vacuumized by removing internal air by a vacuum generator (not shown), and the opening / closing doors a and b are partition walls of the vacuum chambers 1 to 3 by an actuator (not shown). It is configured to slide along and close the opening of the partition wall.

The vacuum chamber 1 accommodates the workpiece 10 carried in from outside the vacuum chamber (atmosphere side), and supplies the accommodated workpiece 10 to the adjacent vacuum chamber 2 (and the workpiece 10 in the vacuum chamber 2 A supply mechanism 4 for transferring (transferring to the vacuum chamber 3) is installed.

A hot-pressing mechanism 5 for hot-pressing a workpiece 10 is installed in the vacuum chamber 2, and a workpiece hot-pressed by the hot-pressing mechanism 5 in the vacuum chamber 2 is installed in the vacuum chamber 3. A cold press mechanism 6 for cold pressing 10 is installed.

The supply mechanism 4 is provided with a movable frame in which a plurality of roller bases 41a on which the workpiece 10 is placed are fixed in a plurality of stages at predetermined intervals in the vertical direction so as to be vertically movable along the fixed frame fixed in the vacuum chamber 1. A work piece storage section 41 and a movable frame 42a provided on the ceiling of the vacuum chamber 1 so as to be movable in a direction of contacting and separating from the opening / closing door a are fixed with pressing members 42b corresponding to the fixing intervals of the roller base 41a. And a transport unit 42 configured as described above.

The vacuum chamber 1 is provided with an opening / closing door c opened to the outside (atmosphere side), and the workpiece 10 conveyed by the supply conveyor 43 provided outside the opening / closing door c is opened / closed by the opening / closing door c. It is carried into the vacuum chamber 1 through the opened opening and placed on the roller base 41a.

Further, the hot press mechanism 5 installed in the vacuum chamber 2 adjacent to the vacuum chamber 1 via the opening / closing door a includes a hot plate having a plurality of stages between a fixed plate (not shown) and a movable plate 51 that is moved up and down by hydraulic pressure. It is configured by arranging 52, the hot plate 52 of the plurality of stages is sequentially placed on the movable plate 51 from the lower side by raising the movable plate 51 and finally sandwiched between the fixed plate and the movable plate 51, The object 10 to be processed placed on each hot plate 52 is subjected to thermal compression treatment with a predetermined pressure and heat.

The cold press mechanism 6 installed in the vacuum chamber 3 adjacent to the vacuum chamber 2 via the opening / closing door b, like the hot press mechanism 5, includes a fixed plate (not shown) and a movable plate 61 that moves up and down. It is configured by arranging a plurality of press plates (cold plates) 62 between them, and the work 10 placed on the plurality of press plates 62 is cold-compressed by raising the movable plate 61. is there.

Further, the vacuum chamber 3 is provided with an opening / closing door d that is configured similarly to the opening / closing doors a and b and is opened to the outside (atmosphere side), and is cooled by the cold press mechanism 6 of the vacuum chamber 3. The workpiece 10 that has been pressed and finished forming is carried out by opening the opening / closing door d.

Outside the opening / closing door d, a receiving mechanism 8 to which the workpieces 10 placed on the press plate 62 are respectively transferred, and a transfer mechanism for transferring the workpieces 10 to the receiving mechanism 8. 7
And a delivery conveyor 9 for delivering the workpiece 10 received by the receiving mechanism 8.

The receiving mechanism 8 includes a hot plate 52 and a press plate.
An elevating frame (not shown) to which plates 81 provided in a plurality of stages corresponding to 62 are fixed is installed to be movable up and down with respect to a fixed frame (not shown) fixed to the main body.

Further, the transfer mechanism 7 hooks the claw members 71, which are movably supported in the transfer direction, on the lower surface of the tray plate 11 which holds the workpiece 10 mounted on the upper surface of the press plate 62, and presses it. It is moved from above the plate 62 to above the plate 81.

The vacuum transfer press apparatus configured as described above is automatically or manually operated by a controller (not shown) as described below.

First, when the cold compression processing by the cold press mechanism 6 installed in the vacuum chamber 3 is completed, the movable plate of the cold press mechanism 6 is moved.
61 is moved downward to open the press plates 62 to each other and open the opening / closing door d for opening the vacuum chamber 3 to the atmosphere side. Then, in a state where the elevating frame of the receiving mechanism 8 is moved up and down to a predetermined position, the transfer mechanism 7 is moved to the opening / closing door d side so that the claw member 71 is placed on each press plate 62.
It is hooked on the lower surface of the tray plate 11 that supports the workpiece, and the workpiece 10 is pulled out and transferred onto the plate 81.

The workpiece 10 transferred onto the plate 81 is sequentially moved from the workpiece 10 placed on the plate 81 located at the lowermost portion by moving the elevating frame downward to the subsequent process by the delivery conveyor 9. Be shipped.

On the other hand, when the processed door 10 is removed from the cold press mechanism 6 by opening the opening / closing door d, the opening / closing door d is closed and the internal air is sucked again to bring the inside of the vacuum chamber 3 into a vacuum state.

When the hot pressing process by the hot pressing mechanism 5 is completed,
The movable platen 51 is moved downward to widen the space between the hot plates 52, and the opening / closing doors a and b are simultaneously opened after the vacuum chamber 3 is in the vacuum state, and the vacuum chambers 1 to 3 are kept in the vacuum state and the opening / closing door a is opened. Allows communication via b.

Here, the movable frame 42a of the transport unit 42 is moved in a direction approaching the opening / closing door a, and is placed on the hot plate 52 of the hot press mechanism 5 at the tip of the pressing member 42b fixed to the movable frame 42a. The hot-pressed work piece 10 is pressed and moved to the vacuum chamber 3 side, and transferred onto the press plate 62 of the cold press mechanism 6.

Next, after returning the pressing member 42b to the initial position at the right end in the figure, the workpiece storage portion 41 is raised to move the workpiece storage portion 41.
The unprocessed workpiece 10 placed on the roller base 41a is also pressed by the tip of the pressing member 15 and transferred onto the hot plate 52.

In this way, the hot press mechanism 5 and the cold press mechanism 6
When the workpieces 10 are respectively supplied to and, the opening / closing doors a and b are closed to simultaneously perform the hot press and the cold press, and the workpieces 10 are externally supplied to the supply mechanism 4 in the vacuum chamber 1. To replenish.

That is, with the opening / closing door c open, the movable frame of the workpiece storage unit 41 is moved downward along the fixed frame, and sequentially from the supply conveyor 43 through the opening of the opening / closing door c onto the roller base 41a. The workpiece 10 before processing is placed. Then, when the unprocessed workpiece 10 is placed on each of the roller bases 41a, the opening / closing door c is closed to suck the internal air of the vacuum chamber 1 to bring it into a vacuum state again.

The pressing process by the hot press mechanism 5 and the cold press mechanism 6 may be allowed to proceed from the time when the opening and closing doors a and b are closed, and the supply of the workpiece 10 to the vacuum chamber 1 and the removal of the internal air are performed. Workpiece
It is carried out at the same time as the hot pressing process and the cold pressing process of 10.

In the above embodiments, the material conveying direction is linear and the respective mechanical units are arranged in series, but the arrangement of the respective mechanical units can be changed as appropriate, and for example, a hot press mechanism and a cold press mechanism can be used. It is also possible to arrange the pressure press mechanism in parallel with each other and to install the supply and take-out mechanism in which the supply mechanism and the receiving mechanism are integrated in front of both devices so as to be movable left and right.

[Effects of the Invention] As described above, according to the present invention, the copper foil is not oxidized by carrying in and out the work piece to and from the hot press, and the hot press can be used. The cold pressing can be simultaneously performed, and at the time of processing such a workpiece, the supply mechanism can be replenished and the supply mechanism section can be evacuated.

As a result, the time required for heating and cooling the hot plate is not necessary, and the vacuum chamber can be sucked during the processing time.
Further, there is little loss of heat energy due to heating / cooling of the hot plate, which makes it possible to perform the press work reasonably and at low cost.

[Brief description of drawings]

FIG. 1 is a plan view of a vacuum press device showing an embodiment of the present invention, and FIG. 2 is a side view of the structure. 1-3 ... Vacuum chamber, 4 ... Supply mechanism 5 ... Hot-pressing mechanism, 6 ... Cold-pressing mechanism 7 ... Transfer mechanism, 8 ... Receiving mechanism 10 ... Workpiece, a to d ...... Open / close door

Claims (2)

[Claims] 1. A hot-pressing mechanism for hot-pressing a workpiece, a cold-pressing mechanism disposed adjacent to the hot-pressing mechanism for cold-pressing a hot-pressed workpiece, and A workpiece storage unit that is disposed adjacent to the pressure press mechanism and stores the workpiece, and the workpiece stored in the workpiece storage unit is supplied to the hot press mechanism and from the hot press mechanism. A feeding mechanism configured to transfer a hot-pressed workpiece to the cold press, and a cold-pressed workpiece that is disposed adjacent to the cold-press mechanism from the cold-press mechanism. A transfer mechanism for transferring to a receiving mechanism, and the hot press mechanism, the cold press mechanism, and the supply mechanism are isolated from each other via an opening / closing door and are arranged in a conveyance direction of a workpiece. Installed in the vacuum chambers arranged in series along At the same time, the transport section of the supply mechanism reaches the hot press mechanism beyond the standby position and the storage section where it does not interfere with the workpiece storage section.
The movable position has a movable transfer member which is movable along the transfer direction of the workpiece so that the leading ends thereof are located at the transfer position and the second transfer position that reaches the cold press mechanism beyond the hot press mechanism. A vacuum pressing device, wherein the workpiece is sequentially transferred to the next vacuum chamber when the opening / closing door is opened by the transfer member. 2. The workpiece cold-pressed by the cold-press mechanism is taken out of the vacuum chamber by the transfer mechanism, and then the workpiece hot-pressed by the hot-press mechanism is supplied. While being transferred to the cold press mechanism by the transport section of the mechanism, the workpiece is supplied to the hot press mechanism from the storage section of the supply mechanism, and then the supply mechanism and the hot press mechanism are isolated from each other. 2. The method of controlling a vacuum press device according to claim 1, wherein the work is controlled so as to supply the work piece from the outside of the vacuum chamber to the housing portion of the supply mechanism in this state.